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(No Model.) 2 Sheets-Sheet 1.

R. MQODELL 8; D. L. MOKITRIGK, SI. MECHANICAL MOTOR.

No. 270,688. Patented Jan..16,1 883.

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(No Model.) 2Sheets-Sheet 2; R. M. ODELL 82; D. L. McKITR IOK, Sr.

MECHANICAL MOTOR.

No. 270,688. I Patented Jan.1'6, 1883.

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UNITED STATES 'ATENT *l' 'rrrca.

RISDOlN M. ODELL AND DAVID L. MCKITRIOK, SR, OF BATON ROUGE, LA.

MECHANICAL MOTOR.

SPECIFICATION forming part of Letters Patent No. 270,688, dated January 16, 1853,

Application filed October 28,1882. (No model.)-

To all whom it may concern:

Be it known that we, RISDON M. ODELL and DAVID L. MOKITRICK, Sr., citizens of the United States. residing at Baton Rouge, in the parish of East Baton Rouge and State of the driving-power of machinery, and is designed to be used as an auxiliary to the power already employed. It is especially applicable to machines driven by foot-power, and of these particularly to the sewing-machine.

In connection-with sewing-machines we prefer to combine our improvement with the treadle of the machine, and while we do not confine ourselves to this particular application of our improvement, nor to this manner of applying or combining the principles of the invention, yet we have preferred in this specitication to exhibit this specific application of it. When used with sewing machines, then, we attach to the under side of the ordinary treadle, which should be set high enough from the floor to admit it, a shallow hoxor frame about the length and breadth of the treadle. The foot-piece of the treadle serves as a cover to the frame, and a bottom may be used or not. This frame is of wood or any desired material, but is preferably made of cast metal and ornamented. \Vithin this frame is a movable weight, which oscillates forward and backward with a movement corresponding in frequency to the strokes of the pitman, gliding upon the inclined plane formed by the alternate elevation and depression of the ends of the treadle. The weight is borne upon small grooved wheels running upon tracks provided for them. Suitable springs of any desired shape are attached to the ends of the weight, or the opposite ends of the inside of the frame, or both, and are so placed as to ease the force of the stroke of the weight against the frame, and also at the proper time to throw the weight back toward the opposite end of the frame. Now, since the machine is worked by pressure alternately applied to the ends of the treadle, upon opposite sides of its middle support or fulcrum, it is evident that this weight, which is adjusted to apply its gravity and impetus to these parts of the treadle in precisely this manner, will add to the working-power exactlyin proportion to these forces. Moreover, as the tendency of this weight is to perfect regularity in its motion, its actuating-power is also uniform, so that in this respect its effect is similar to a large balance-wheel, driving the machine steadily on against varying resistance.

The better to understand the nature of our invention, reference is madeto the accompanying drawings, which form a part of this application, in which Figure 1 represents a plan view of our improved treadle-motor, the cover or foot-piece being removed. Fig. 2 isan enlarged vertical view of the buffer-spring. Fig. 3 represents the curved spring in perspective. Fig. 4 is a plan view of an end of the treadle lowered as in use and the weight against the spring. Fig. 5 is a vertical end view of the movable weight and Fig. 6 is a vertical end view of the treadleframe covered by the foot-piece.

Similar letters refer to corresponding parts throughout the several views.

In Fig. 1, the letters A A indicate the frame or box of the treadle. At the lower part of this frame we extend from front to back. the parallel tracks D D, arched to fit the grooves in the peripheries ofthe wheels 0 O, and firmly attached to the frame A. The wheels 0 G are properly attached to the weight B, and. bear it to and fro upon the tracks D D. The weight B is furnished with recesses at either end to receive and hold the buffers E E. These recesses are indicated by. dotted lines and the letters I) I). The curved springs F F are secured at their central convex sides to the inside of the frame by bolts or screws K K, so as to receive the weight B upon their ends P P. The buffers, composed of spiral springs E and having rubber heads L, work against the screw or bolt heads K K.

M is the support or fulcrum upon which the treadle works. The drawings show M to be above the weight B and the other parts of the motor, but this arrangement may be reversed. In some instances the motor-seems most effective when placed above the fulcrum. We

extend one side of the frame A to connection a with the pitinan N This connection may be made with any part of the treadle as well.

In operating this treadle, on depressing the toe or connected end of it the weight B on its wheels 0 0 moves down the inclined tracksD D, striking the spring F and driving the bufl'erhead L 'againstthe bolt-head K. The'springs Fand E yield until the table takes the position indicated in Fig. 5, when it is thrown back by the reaction of the said springs, and the parts are so adjusted that this is done just before the toe-point rises. As the weight rebounds the toe rises and the heel of the treadle sinks. The weight rolls down the incline thus made to the heel-point, where it is acted upon in a similar manner by the springs placed there, and is forced again toward the toe-point just as that end sinks again, and this oscillatory.

movement continues while the treadle is in motion. As the Weight falls to either end of the treadle, it has the effect to force it down more quickly by its weight and momentum, and, having accomplished this, is thrown back by the springs. The weight B is thus made to deliver its force upon thesinking end of the treadle, and receives its impulse to return at the instant when the treadle is motionless, taking little or nothing from the tendency of the treadle. to rise from the impetus of the mao chine with which it is connected.

What we claim as our invention, and desire to secure by Letters Patent, is

1. An auxiliary mechanical motor for footpower, consisting of the combination, with the 3 5 treadle, of a suitable frame, a movable weight furnished with bufi'ers, springs properly placed within the said frame to act upon the said weight, and a trackway and wheels for bear-- ing said weigh t, substantially as set forth.

2. In atreadle-motor, the combination of the frame A, foot-piece R, weight B, buifers E E, with heads L L, wheels 0 C, tracksD D, recesses b b, and springs F F, all arranged substantially in the manner and for the purposes 5 herein set forth.

. In testimony whereof we affix our signatures in presence of two witnesses.

RI'SDON M. ODELL. DAVID L. MoKlTRlGK, SR. Witnesses:

JOHN J ASTRENNKI, SAMUEL G. LAYCOOK, J r. 

